"Would you mind posting a copy of your config file to actually see what you mean?"

Can't do that. It's got private keys in it. But see the examples in this link by Hive account@orly, from the top-level post. Near the bottom of the article.

"would it not spread the proceedings to the different miners/accounts? even if those accounts are mine?"

Yes, it does. If there's a way to avoid that, I'm not aware of it. It also distributes the work alphabetically, so it's not even a balanced split. The first account in alphabetic sort order gets most of the blocks.

Update: Because of that sort order work distribution, I also should have noted that in practical terms, there may not be much benefit from having more than 3 or 4 accounts, no matter how many computers you are running. I'm running three computers, but only two accounts, and I've been seeing some missed opportunities, but not enough to justify the hassle of managing another account.